Lubricating attachment for gasolene-tanks.



G. w. MARSH.

LUBRICATING ATTACHMENT FOR GASOLENE TANKS; APPLICATION FILED MAB. 2, 1911..

1,010,288. 1 Patented'Nov128, 1911.

COLUMBIA PLANOGRAP'H C0.,wAsl-nhmu, D. c.

GEORGE w. 'MARSH, or OAKLAND, CALIFORNIA.

LUBRICATING ATTACHMENT FOR GASOLENE-TANKS.

Specification of Letters Patent.

Patented Nov. 28, 1911.

Application filed March 2, 1911. Serial No. 611,929.

To all whom it may concern:

Be it known that I, GEORGE W. MARSH, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Lubricating Attachments -for Gasolene-Tanks, of which the following is a specification.

This invention relates to devices for lu' bricating the cylinders of gasolene engines and has for its object to provideamore simple automatic device of this kind whereby the cylinder oil is automaticallyfed into the gaso lene tank and is carried with the gasolene from the gasolene tank through the carbureter to the engine cylinder. In order to accomplish this result the cylinder oil is contained within a separate tank located'inside of the gasolene-tank and provided with a siphon which will cause the oil to flow in proportion to the amount of gasolene used.

Referring to the accompanying drawings Figure 1 is a view in cross section of a gasolene tank showing the lubricating device mounted therein. Fig. 2 is a detail view in cross section on the line maa of Fig. l of the oil tank.

1 indicates a gasolene tank of the usual form provided at its bottom with a'feeding pipe 2 shown as broken away and which in employment with this inventionleads to the carbureter. The top of the gasolene tank 1 is provided with an opening encircling which is an internally threaded neck 3 having a flange 4 which is secured to the tank 1.

5 indicates a cap which is in threaded engagement with the neck 3 and has avertical tubular portion 6 forming an opening 7 which is closed by any suitable form of stopper such as 8.

Suspended in the tank 1 and having its lower end slightly spaced from the bottom of the tank 1 is an oil tank 9 preferably in the form of a cylinder and having its upper end secured to the cap 5. Mounted in the oil tank 9 is a siphon having a short leg 10, and a long leg 11 projecting through the bottom of the oil tank 9. The siphon which consists of a pipe curved at its upper end is secured within the oil tank 9 in any suitable manner as for example by the transverse metallic strips 12 which are fastened together by screws 13, one of said strips 12 having its bent ends 14 secured by screws 15 to the tank 9. The strips 12 are formed with the bent portion 16 which encircle and clampthe upper end of the legs 10 and 11 of the siphon. In order to start the siphon the cap 5 is formed with a short laterally extending blow pipe 16 which communicates with a vent hole 17 in the cap 5, said vent hole being closed by means of a set screw 18 and having its lower end seated against said vent hole. I

The operation of the device is as follows :-The tank 1 being supplied with the desired amount of gasolene 19 oil is supplied to the tank 9 by removing the stopper 8. The surface of the oil 20 in the tank 9 and the surface of the gasolene 19 being on the same level as shown it is desirable that if the liquids are of different specific gravities that the relative levels be such that they will balance each other if placed in communication. Assuming such to be the case, the siphon is started by unscrewing the set screw 18 to inclose the vent 17 and then blowing through the tube 16. This will fill the tube of the siphon with oil and when the gasolene level falls the pressure within the tank 9 will cause a small quantity of oil to run from the siphon into the gasolene. The oil being heavier than the gasolene is soon drawn off through the feed pipe and passes through the cylinders. This action keeps up as long as the gasolene is used and stops as soon as the gasolene feed is stopped.

It is customary to mix cylinder oil and gasolene in certain proportions to allow the gasolene and cylinder oil in this mixed condition to pass through the carbureter into the gasolene engine cylinder and thus feed the gas engine cylinder with gas and cylin-I der oil at the same time. This method, however, frequently produces unsatisfactory results because cylinder oil settles and collects in the bottom of the gasolene tank and flows into the carbureter with the result that the gas supply is cut off from the engine thereby causing the latter to misfire. This flow is overcome by placing the cylinder oil tank within the gasolene tank as hereinbefore set forth, and feeding the cylinder oil in the manner described. The oil tank may be also used for feeding kerosene oil to the engine cylinder to cut out carbon, etc., from the spark plug and cylinder head.

Having described the invention, I claim 1. In a device of the kind described, a gasolene tank, a removable cap mounted on saidtank, a passageway extending through the same, a stopper closing said passageway,

an oil tank secured to and suspended from said cap within the gasolene tank and a siphon mounted in said oil tank and having its long leg projecting out of said tank into the gasolene tank.

2. In a device of the kind described, a gasolene tank having a discharge pipe in its bottom and an opening in its top, a removable cap closing said opening and having a to the mouth of the discharge pipe.

3. In a device of the kind described, a gasolene tank, an oil tank suspended within said gasolene tank, a siphon mounted in said oil tank and having its long leg projecting through the latter into the gasolene tank, said oil tank being provided with an air vent, and a blow pipe communicating with in presence of two witnesses.

said air vent, and means for closing said air vent.

4. In a device of the kind described, a gasolene tank having a discharge pipe in its bottom and an opening in its top, a screw threaded cap closing said opening. and having an oil supply passageway and an air vent, a stopper closing said oil supply passageway, an oil tank secured to and suspended from said cap and having its lower end located adjacent to the bottom of the gasolene tank and spaced above the mouth of the discharge-pipe, a blow pipe mounted on said cap communicating with said air vent which opens into said oil tank, a set screw closing said air .vent, and a siphon mounted in said oil tank and having its long leg projecting through the bottom of the latter and located adjacent to the mouth of the gasolene tank.

In testimony whereof I aflix my signature GEORGE W. MARSH. Witnesses:

H. C. SoHRoEDER, F. RSGHROEDER.

Copies of this patent may be obtained for'five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

